Users can now abandon a draft they don't want to send. Two entry
points, one shared server action.
Backend
- New action on the existing POST /CollabCentral/:app/jobs/:action
route: /jobs/cancel. Deletes jobs.building[<personId>::<appName>]
if present, saves jobs.json, returns 200 with { cancelled: true }.
- Idempotent: if there was no building entry (client fires this on
every cancel click regardless of state), the endpoint no-ops with
{ cancelled: false } and never touches jobs.json. That keeps disk
writes tied to real state changes instead of every click.
- Wrapped saveConfig in try/catch so a disk-full or permission
failure returns a clean 500 instead of crashing the request.
Frontend
- New "Cancel" button in the compose form's action row, sits next
to "Review & send" as a secondary action.
- cancelMessage() checks whether the form has anything in it (text,
image, CSV, groups, schedule) and only prompts window.confirm() if
there's actually a draft to lose. Blank-form clicks skip the
prompt so the button behaves as expected on first load.
- New "Discard" action on the review modal for "wait, actually no"
decisions after clicking Review. Positioned on the far left of the
modal footer with margin-right: auto so it's visually separated
from the affirmative "Keep editing" / "Send" pair — a stray click
on the way to Send lands on Keep editing, not Discard.
- Extended clearForm() to also clear both VirtualSelect group
pickers via setValue([]) (previously only text/files/schedule got
reset, leaving stale group selections after a cancel or send).
- New .btn-danger style: muted red text on a transparent background,
filled-red hover state. Used for the modal Discard button and
available for future destructive UI.
Not covered (follow-up if wanted): the preview DM the bot sends to
the sender during /jobs/edit isn't tracked in the building job, so
Cancel doesn't retract that Webex message. Adding server-side
tracking of the preview message id would let cancel call
DELETE /v1/messages/<id> to clean it up.
Co-authored-by: Cursor <cursoragent@cursor.com>